PRETREATMENT DEVICE AND PRETREATMENT METHOD FOR FILTER

Title:

PRETREATMENT DEVICE AND PRETREATMENT METHOD FOR FILTER

Document Type and Number:

Japanese Patent JP2005028274

Kind Code:

A

Abstract:

To provide a pretreatment device and a pretreatment method for a filter which are suitable for pretreatment of feed water containing a relatively large amount of cloudy components, such as seawater.

The pretreatment device for the filter is provided with a filter material 3 which has a capacity for adsorbing the cloudy components in the feed water and has a pressure difference of 200 kPa/m or lower at a flow rate of 30-40 m/hr, thereby removing the cloudy components without feeding a coagulant.

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Inventors:

NAGAI MASAHIKO
IWAHASHI HIDEO
TANAKA KENJI

Application Number:

JP2003195800A

Publication Date:

February 03, 2005

Filing Date:

July 11, 2003

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Assignee:

MITSUBISHI HEAVY IND LTD

International Classes:

B01D61/04; B01D24/00; B01D61/16; B01D61/52; C02F1/28; C02F1/44; (IPC1-7): C02F1/28; B01D24/00; B01D61/04; B01D61/16; B01D61/52; C02F1/44

Attorney, Agent or Firm:

Tadashi Takahashi
Masatake Shiga
Masakazu Aoyama

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